George III belonged to the House of Hanover. Born in 1738, he ascended to the throne in 1760 and died in 1820. He was preceded as monarch by George II and was succeeded by George IV.
One of the longest reigning kings, George III was the son of Frederick Louis (1707-1751). His father's death made him heir apparent. In the year after his ascension, he married Princess Charlotte Sophia of Mecklenburg-Strelitz. He was the first of his dynasty to be born and raised in England.
George III is best remembered in America for the effect that his policies had on bringing about the American Revolution. Afterwards, in 1783, the younger William Pitt became Prime Minister and continued almost without interruption until his death in 1806. George's obstinate opposition to Catholic emancipation led to ongoing conflicts with his ministers. In 1810, his previously intermittent insanity became permanent and affairs were managed by the regent, later George IV, for the balance of his reign.